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Infectious Diseases > Skin, Soft Tissue, Bone, Joint > Flashcards

Flashcards in Skin, Soft Tissue, Bone, Joint Deck (48):
1

The two most common bacterial infectious agents of skin?

Staph aureus, strep pyogenes

2

The pathogen for staphylococcal scalded skin syndrome (SSSS) is ____

Staph aureus

3

This disease involves separation of the cells of the outer epidermis from one another and underlying tissue. Reddening of the skin begins near the mouth and spreads throughout body. Large blisters followed by peeling of the outer epidermis in sheets occur

Staph scalded skin syndrome (SSSS)

4

SSSS primarily affects infants and children

5, IV antibiotics

5

The most superficial skin infection. MC caused by Staph

Impetigo (pyoderma)

6

Is impetigo contagious?

YES

7

____ is a group A Strep skin infection caused by Strep pyogenes. It is characterized by a bright red face secondary to dermal dilation of capillaries. Also contagious.

Erysipelas

8

Erysipelas can lead to this kidney infection

Glomerulonephritis

9

Which is deeper: erysipelas or cellulitis?

Cellulitis

10

Most common cause of cellulitis?

Streptococcus

11

Which is larger: furuncle or carbuncle?

Carbuncle

12

Folliculitis, furuncles and carbuncles are caused by ___ infection of hair follicles

Staph

13

The worst example of a skin infection is _____. It is flesh eating, starts as cellulitis and invades the fascia.

Necrotizing fasciitis

14

The two most common organisms causing necrotizing fasciitis?

1. Strep
2. Clostridium

15

Tx of necrotizing fasciitis is surgical debridement, meaning _____

Scrape the dead tissue

16

Mortality rate of necrotizing fasciitis without Tx is __%

80%

17

Gram + anaerobic bacillus that causes Gas Gangrene. This pathogen lives and feeds on nutrients released by dead cells (secondary to gun shot wounds, trauma, fx)

Clostridium perfringens

18

T/F: Gas Gangrene is a medical emergency

TRUE

19

Gas under the skin is called ____

Crepitus

20

The most common body tissue infected by Bacillus anthracis (Anthrax)?

Skin (Cutaneous)

21

Patients present with itching, followed by appearance of a raised lesion that turns into a black eschar in 7-10 days

Anthrax

22

Transmission of anthrax is through direct contact of ____ (form of bacteria) with breaks in the skin

Endospore

23

Herpes infections are diagnosed by a ____ smear

Tzanck

24

____ infections are recurrent because the virus enters nerve cells and remains dormant until stress or other disease states come along

Herpes simplex

25

____ syndrome can be caused by giving children ASPIRIN who are with herpes zoster/varicella (chicken pox). Causes liver and brain damage

Reye’s

26

___ is a viral skin infection found in Africa that causes widespread bleeding, among other Sx. It can only be spread after symptoms begin

Ebola

27

Ebola symptoms can appear from __-__ days after exposure

2-21

28

___ infections cause severe itching of the infected area. They are diagnosed with KOH prep

Fungal

29

Dermatophytosis is commonly known as ____

Ringworm

30

The MC agents responsible for this fungal infection are Trichophyton and Microsporum

Ringworm (dermatophytosis)

31

Trichopyton and microsporum (fungi) use ___ as a source of food

Keratin

32

The most common cause of osteomyelitis is ____

Staphylococcus

33

___ arthritis causes red, swollen, tender, immobile joint. It is caused by Staph (40%), Strep (30%), or Gram - (20%)

Septic

34

The best test for this joint disease is Arthrocentesis (>50,000 WBC is a positive test)

Septic arthritis

35

The MCC of this wound infection is Pseudomonas aeruginosa (bacteria). Causes pus formation that is bluish-green

Burns

36

____ bites become infected by a gram - rod called Pasteurella multocida. An acute, painful cellulitis develops within 24 hours of bite or scratch

Animal

37

____ disease is caused by scratches or bites that introduce bacteria (Bartonella henselae) into skin. Causes enlarged LN for several months

Cat-scratch

38

Necrotic tissue/wound (gangrene) that causes tissue (limbs) to turn black is commonly caused by ____

Frostbite

39

Lyme disease is caused by a ____ called Borrelia burgdorferi carried by Ixodes (deer tick)

Spirochete

40

This disease results in a “target” shaped lesion called erythema chronicum migrans

Lyme disease

41

Fluorescent antibody stains are a confirmatory test for _____, in which the vector is a tick. It causes blood vessel damage and spreads from extremities to trunk. Clinical presentation would be a rash on soles and palms

Rickettsia

42

Common name for Rickettsia rickettsii?

Rocky Mountain Spotted Fever

43

____ is caused when a traveler returns from an endemic area. The pathogen is Plasmodium and the vector is the Anopheles mosquito

Malaria

44

Ordinary measles are called ____ and German measles are called _____

Rubeola, rubella

45

In this disease, a rash appears at the hairline and spreads cephalocaudally over 3 days. Koplik spots appear on the buccal mucosa of the cheeks

Measles (rubeola)

46

In this disease a rash begins on the face and spreads cephalocaudally. Lymphadenopathy occurs and forchheimer spots appear on the soft palate

German measles (rubella)

47

Roseola infantum affects young children 6-36 months old. It is caused by human herpes virus __. After fever subsides, a rash begins on the neck and trunk and spreads to the face and extremities

6

48

This childhood disease causes a mild fever and “slapped cheek” appearance. Sunlight aggravates the rash

Erythema infectiosum (Parvovirus B19)